Drones are already able to take off, fly a mission and land withoutanyhumanintervention, and a mechanical dog developed by the Pentagon can walk for 20 miles (32km) without a break and obey voice commands.
So far, the cars have have racked up more than 300, 000 driving miles, and 50, 000 of those miles were withoutanyintervention from the human drivers, Google says.